package com.atguigu.demoarray;

import java.util.*;
import java.util.concurrent.CopyOnWriteArrayList;

public class ThreadArray {
    public static void main(String[] args) {

//        List<String> list = new ArrayList<>();

//        List<String> list = new Vector<>();

//        List<String> list = Collections.synchronizedList(new ArrayList<>());

        List<String> list = new CopyOnWriteArrayList<>();
        for (int i = 1; i <= 10; i++) {
            new Thread(() -> {
                list.add(UUID.randomUUID().toString().substring(0,8));
                System.out.println(list);
            }, "array" + i).start();
        }

    }
}
